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Berberine hydrochloride (BBH)is an isoquinoline alkaloid and exists as a quaternary ammonium cation in aqueous solution. Natural berberine is mainly contained in coptics plants and usually exists as a hydrochloride or sulfate.It is a medicine used for antibiosis and inflammation and is also a natural drug with low poison danger and low side effects.<br />Tungstic acid can exist in various states, mostly yellow powder or crystal. It is soluble in hydrofluoric acid, slowly soluble in caustic solution, insoluble in water and other acids.